1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
goldfiish [28.3K]
3 years ago
10

Why is water not used as a solvent in paper chromatography​

Mathematics
1 answer:
Anastaziya [24]3 years ago
8 0

Answer:

Because the kind of compounfds that you try to determine using paper chromatography (organic compounds) are usually not soluble in water. Furthermore, water could react chemically with some of this compounds, because it's a very reactive molecule. You need organic solvents that are mostly inert.

You might be interested in
Prove that step by step ​
Elza [17]

Answer:

In ΔECB ,

∠ECD = ∠EBC + ∠BEC (∵ Exterior Angle Property of a triangle)

⇒ ∠BEC = ∠ECD - ∠EBC  ................. eqn.1

In ΔABC ,

∠ACD = ∠BAC + ∠ABC (∵ Exterior Angle Property of a triangle )

⇒ 2∠ECD = ∠BAC + 2∠EBC

⇒ ∠BAC = 2∠ECD - 2∠EBC = 2(∠ECD - ∠EBC)

( Putting eqn.1 here )

⇒ ∠BAC = 2∠BEC  (∵∠BEC = ∠ECD - ∠EBC)

3 0
2 years ago
- x(x + 7 (x - 5)<br> Graph this
Inessa05 [86]

Answer:

=−8x2+35x

Step-by-step explanation:

multiply first

3 0
2 years ago
What is the perimeter of a rectangle with an area of 2x^2+11x+5 in^2?​
kirza4 [7]

Answer:

6x + 14

Step-by-step explanation:

Area = side x side

Factor the quadratic:

2x^2 +10x / +1x +5

2x(x+5) 1 (x+5)

(2x + 1) (x+5)

^These are your two sides

Perimeter =2L + 2W

(2(2x+1)) + (2(x+5))

4x+4+2x+10 = final answer 6x + 14

6 0
2 years ago
How should i solve this using an algebraic equation
artcher [175]
House price = down payment + mortgage x number of months

430,000 = 250,000 + 2,000x where x is number of months

To find number or months solve for x
430,000 = 250,000 + 2,000x

Subtract 250,000
180,000 = 2,000x

Divide by 2,000
x = 90 months

12 months in one year
90 = 84 + 6 = 12 x 7 + 6

7 years and 6 months
6 0
2 years ago
What is the lowest common multiple (LCM) of 8, 2 and 5?
aivan3 [116]

Answer:

40

Step-by-step explanation:

Using the method of prime factors

8 = 2 × 2 × 2 = 2³

2 = 2

5 = 5

Then LCM = 2³ × 5 = 8 × 5 = 40

8 0
3 years ago
Read 2 more answers
Other questions:
  • HELPPPP WILL GIVE BRAINLIST
    10·1 answer
  • A picture frame is 5 inches on 2 sides and x inches on the other 2. If its perimeter is 50 inches, how long is each of the other
    12·2 answers
  • Plz help me I need to turn it in on Monday
    13·1 answer
  • Can someone help me with this please?
    12·1 answer
  • Differentiating a Logarithmic Function in Exercise, find the derivative of the function. See Examples 1, 2, 3, and 4.
    11·1 answer
  • (05.01)Elliot has been running a lawn care business since 2000. He cuts grass, trims, and weed whacks yards for his customers th
    9·2 answers
  • You take a group of 20 people going to the movies. Kid’s tickets cost $4.-each, and adults tickets $6.-each. Your total cost is
    14·1 answer
  • Can you form a triangle with angles that measure 70,90 and 20°
    10·2 answers
  • Instructions: Use the ratio of a 30-60-90 triangle to solve for the variables. Leave your answers as radicals in simplest form.
    11·2 answers
  • URGENT PLEASE HELP WILL GIVE BRAINLIEST!!!!
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!